Mechanical Engineering Exam > Mechanical Engineering Questions > The phenomenon of pre-ignitiona)always occurs...
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The phenomenon of pre-ignition
- a)always occurs in diesel engines
- b)never occurs in diesel engines
- c)always occurs in petrol engines
- d)increases the power output engines
Correct answer is option 'B'. Can you explain this answer?
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The phenomenon of pre-ignitiona)always occurs in diesel enginesb)never...
Pre-ignition (or preignition) in a spark-ignition engine is a technically different phenomenon from engine knocking, and describes the event wherein the air/fuel mixture in the cylinder ignites before the spark plug fires. ... Many engines have suffered such failure where improper fuel delivery is present.
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The phenomenon of pre-ignitiona)always occurs in diesel enginesb)never...
Pre-Ignition in Diesel Engines
Pre-ignition is a phenomenon in which the fuel-air mixture ignites before the spark plug fires. This can cause engine knocking, damage to the engine, and reduced performance.
Pre-ignition can occur in both petrol and diesel engines, but it is more common in petrol engines. Diesel engines are less prone to pre-ignition because of their unique combustion process.
How Diesel Engines Work
Diesel engines operate differently than petrol engines. In a diesel engine, fuel is injected directly into the combustion chamber, where it mixes with air that has been compressed to a very high pressure. The heat from the compressed air causes the fuel to ignite spontaneously, without the need for a spark plug.
Because diesel engines do not rely on a spark to ignite the fuel, they are less susceptible to pre-ignition. However, they can still experience other types of combustion-related problems, such as detonation and diesel knock.
In conclusion, pre-ignition is a phenomenon that can occur in both petrol and diesel engines, but it is more common in petrol engines. Diesel engines are less prone to pre-ignition because of their unique combustion process, which does not rely on a spark to ignite the fuel.
Pre-ignition is a phenomenon in which the fuel-air mixture ignites before the spark plug fires. This can cause engine knocking, damage to the engine, and reduced performance.
Pre-ignition can occur in both petrol and diesel engines, but it is more common in petrol engines. Diesel engines are less prone to pre-ignition because of their unique combustion process.
How Diesel Engines Work
Diesel engines operate differently than petrol engines. In a diesel engine, fuel is injected directly into the combustion chamber, where it mixes with air that has been compressed to a very high pressure. The heat from the compressed air causes the fuel to ignite spontaneously, without the need for a spark plug.
Because diesel engines do not rely on a spark to ignite the fuel, they are less susceptible to pre-ignition. However, they can still experience other types of combustion-related problems, such as detonation and diesel knock.
In conclusion, pre-ignition is a phenomenon that can occur in both petrol and diesel engines, but it is more common in petrol engines. Diesel engines are less prone to pre-ignition because of their unique combustion process, which does not rely on a spark to ignite the fuel.
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The phenomenon of pre-ignitiona)always occurs in diesel enginesb)never...
As diesel engine only compress air initially no fuel is present during compression so their is no chance of preignition in diesel engine
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The phenomenon of pre-ignitiona)always occurs in diesel enginesb)never occurs in diesel enginesc)always occurs in petrol enginesd)increases the power output enginesCorrect answer is option 'B'. Can you explain this answer?
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